optimized reaction conditions are well suited to the task of N-vinylation of sulfoximine with trans-2-phenylvinylboronic acid. N-Arylation of sulfoximines with different arylboronic acids, including sterically hindered boronic acids, is achieved using copper(I) iodide and 4-DMAP at room temperature. Moreover, N-arylation of biologically relevant l-methionine sulfoximine is demonstrated for the first time
Nickel‐Catalyzed
<i>N</i>
‐Arylation of
<i>NH</i>
‐Sulfoximines with Aryl Halides via Paired Electrolysis
作者:Dong Liu、Zhao‐Ran Liu、Cong Ma、Ke‐Jin Jiao、Bing Sun、Lei Wei、Julien Lefranc、Simon Herbert、Tian‐Sheng Mei
DOI:10.1002/anie.202016310
日期:2021.4.19
A novel strategy for the N‐arylation of NH‐sulfoximines has been developed by merging nickel catalysis and electrochemistry (in an undivided cell), thereby providing a practical method for the construction of sulfoximine derivatives. Pairedelectrolysis is employed in this protocol, so a sacrificial anode is not required. Owing to the mild reaction conditions, excellent functional group tolerance and
Copper-catalyzed denitrogenative N-arylation of sulfoximines and sulfonamides with arylhydrazines
作者:Wanrong Dong、Chaoyang Liu、Xinchi Ma、Yingjun Zhang、Zhihong Peng、Dexun Xie、Delie An
DOI:10.1016/j.tet.2019.05.039
日期:2019.7
A Cu-mediated ligand-free arylation of NH-sulfoximines and sulfonamides by arylhydrazine hydrochlorides was herein demonstrated. The oxidative transformation provided an easy access towards N-aryl sulfoximines and sulfonamides in high yields (up to 93% yields) with broad functional groups tolerance (up to 36 examples). The protocol was proposed to take place through the free radical pathway based on
Efficient Copper-Catalyzed N-Arylation of Sulfoximines with Aryl Iodides and Aryl Bromides
作者:Jörg Sedelmeier、Carsten Bolm
DOI:10.1021/jo051066l
日期:2005.8.1
systems for copper-catalyed N-arylations of sulfoximines with arylbromides and aryliodides have been developed. Using 10 mol % of a copper(I) salt in combination with 20 mol % of a 1,2-diamine and Cs2CO3 provides N-arylated sulfoximines in high yields. Various functional groups and heteroatoms are tolarated. The method is complementary to the known protocols for N-arylations of sulfoximines, which require
已经开发了两种简单且廉价的系统,用于亚砜基与芳基溴化物和芳基碘化物的铜催化的N-芳基化。将10摩尔%的铜(I)盐与20摩尔%的1,2-二胺和Cs 2 CO 3结合使用,可以高收率得到N-芳基化亚砜基。各种官能团和杂原子是对等的。该方法是对亚砜亚胺N-芳基化的已知方案的补充,后者需要化学计量的铜盐或成本昂贵的钯/ BINAP催化剂。
Copper catalyzed N-arylation of sulfoximines with aryldiazonium salts in the presence of DABCO under mild conditions
作者:Siddharth Baranwal、Jeyakumar Kandasamy
DOI:10.1016/j.tetlet.2020.152079
日期:2020.7
tetrafluoroborates is demonstrated in the presence of copper chloride and DABCO. A wide range of aryl and alkyl sufoximines are participated in the couplingreaction with different aryldiazonim salts bearing electron donating and withdrawinggroups and provided the desired products in 67–88% yields. The reaction proceeds through a radical mechanism.